Marking die



Sept 26, 1944. R4.' H. NOBLE 2,358,822

MARKING ME Filed June 2,l 1943 2 sheet'sf-sheet 2 Patented Sept. 26, 1944 OFFICE MARKING DIE Robert H. Noble, Wharton, VN. J. Application June 2, 1943, serial No. 489,350

' 1 claim. (c1. 10i-7) I (Granted under the act amended April 30, 1928; 370 O. G. 757) vThe invention described herein may be manufactured and used by or for the Government for governmental purposes without the payment to me of any royalty thereon. l

`This invention relatesto a machine for marking manufacturing information on cylindrical surfaces.

It is very frequently desirable to mark manufacturing indicia upon machine components that have protruding parts that interfere with holdingthe marking tool in contact with the work throughout a complete revolution, and the object of this invention is to provide a machine in which it is not necessary to revolve the work in order to satisfactorily and effectively mark it. The invention comprises as a leading feature, a novel marking die holder and die arrangement, and means whereby the work is firmly held in the machine in position to be operated upon by the marking dies, and the dies oscillated relative to the work, the movement of the Work holder causing a similar and simultaneous oscillation on the part of the die. The machine, of necessity will be of sturdy construction, and a further object is to provide a machine that will be especially durable and ecient in operation,and one requiring a minimum of exertion in its operation.

In the drawings illustrating the invention:

Fig. 1 isa front elevation of the machine with the housing that covers the major part of the mechanism, in section.

Fig. 2 is a vertical section taken about on the line 2--2 of Figure 1.

Fig. 3 is a perspective view of an element of the marking die clamp.

Fig. 4 is a similar View of the die holder..

Fig. 5 is a similar View of the other element of the die clamp.

Fig. 6 is a detail sectional view of the elements shown in Figures 3 to 5, mounted on a part of the divided die carrying shaft.

Fig. 7 is a perspective of one of the marking dies. Fig. 8 is an enlarged detail sectional View of the work holder, and a portion of the work holder shaft.

Fig. 9 is a detail perspective viewof the coupling sections of the die carrying shaft.

Referring to the drawings, I designates the main support for the machine, that will be positioned vertically and in turn secured to a sub-y of March 3, 1883, as

to permit the convenient insertion and removal of the Work.

Four sturdy posts 4, secure to and space from the support I, a bearing rplate 5, formedwith a laterally extending boss 6, which together with the plate provides a bearing for a shaft 1, the other end of which has a gearing in a flanged thimble 8, which in turn has abearing in a chambered member 9, through whose flanges I0 there are bolts firmly securing the member to the support I. Within the upper chamber of the member 9, there is a headed and flanged bolt I2, which with other minor parts, prevents the lateral movement of the shaft. Integral with the front end of the shaft 1, is an annular flange I3, anda short central boss I4, which fits into a correspondingly shaped recess inthe work holding member I5 which is flanged as indicated at I6, the flanges I3' and I6, being separably secured together by pins I1.

Keyed to the shaft 1, between the plate 5 and support I, is a gear wheel I8, in mesh with a similar gear `wheel I9, keyed tothe section 26 of a divided shaft 2 I, whose inner end has a bearing in the member 9. This shaft has a flanged and headed bolt 23 in the chamber 24 of said member, and a bearing in a thimble 20 in the plate 5. On each side of the gears I 8 and .I9, there are identical metal set screw'held washers 25,

cess 26 to receive the rib 21 of the coupling 28,.

Figure 9, with' a similar rib 29 at right angles to thev rib 21, and adapted to tkin a recess 30 in a boss 3I`l integral with the flange 32 of the front section 33 of the shaft 2|, this section 33 of shaft 20, being the part upon which the die holder and dieclamps are mounted, as will be presently described. kThe shaftsection 33 has a bearing in a thi-mble 34, in a housing 35 having a chamber 36 for the coupling 28 and the flange 32. The housing is flush against the front face of the plate 5, and is provided with side flanges 36', Figure 1,.which.are overhung by the ledges of guide plates 31 to hold the housing in place and provide for the slight adjustment the housing must'have relative to the Work holder, as will appear.

'Ihere is an extension 38 on the housing, the extension having slightly elongated apertures 39,

therein for the passage of headed locking boltsV 40, that hold the housings in adjusted position, after it has been adjusted by the adjusting bolts 40', in bar 4D bolted to the plate 5.

Referring particularly to Figures 3 to 5, and 6 and '1, showing more clearly the die holder and die holder clamps, 4i designates one clamp and 42, the other, and 43 indicates the die holder. The clamps are cut away to form recesses 44, and 45, corresponding in shape and extent, and the die holder 43, is similarly cut away to form a recess 46, so that when these elements are assembled the recesses will register with each other. However the die holder has an additional recess 41, the boundaries 41' of which are radial to theholder, the arcuate portion 48 forming a base for the thinner ends 49 of the wedge shaped indicia carrying dies 50, which are tapered so that when the recess is filled to capacity theindicia carrying ends of the dies will be a continuation of the circumference of the holder, and when the number` of indicia carrying dies is less than the capacity of their recess, a blank or blanks will be used to ll in.

The clamp element 4| is provided with an annular rib l, broken at the margins of the recess 44, and the die holding element 43 has a groove 52, to receive the rib 5I, and there is a notch 52 in one of the parts 41' of the holder 43, which also receives the rib 5I, when the two elements are assembled.

The clamp and holder elements have bearings on the reduced portion 53 of the shaft section 33, and each element has a key-Way 54 for the reception of a key 55, carried by the reduced portion 53, upon which they are mounted.

The disk elementslil, 42 and 43, are each provided with some bolt holes 56 and some dowel pin holes 51, for bolts 58, and dowel pins* 59, Figure 1, by which these elements are firmly held together.

Reference being had particularly to Figure 1, the numeral 60 designates a compressed air cylinder, to which compressed air, which is preferred to steam, is admitted from any suitable source, preferably through a twoy way valve 6|- which may be of any approved make. This cylinder is firmly bolted to the support I, and is disposed at an angle to the other mechanism. The piston rod 62, is provided with a rack 6,3, in mesh with the gear wheel i8, Fig. 2, the rack being guided inits movementin` a recess 64A in a block 65, bolted to a second block 68. secured to the support I.

the preamble of this specification, the leading feature of the organization is that it is unnecessary to revolve the work for a complete revolution, but to oscillate it and the marking dies, through a small arc, thus in many instances enabling the marking of components, having parts making it unfeasable to completely revolve the work.

It will be noted that one of the lugs 61, extends to a point where it would interfere with movement of the marking dies, and for that reason, in the present instance, the die clamp and die holder are provided with the recesses 44, 45 and 46, permitting the lugs to extend normally below the joint periphery of the clamp and die assembly, so as to permit the marking dies to contact the work.

It has hereinbefore been stated, that when the l work holder is oscillated, a similar and co-eX- The work holder has integral therewith two arcuate yrecessed lugs 61, which assist in supporting the work which, in the present instance, is a cylindrical body indicated at a in dotted lines Figure 2, and this particular component is keyed to the work holder by a key 68 to prevent movement of the work independently of the holder, and in the instance shown, the end of the work extends past the ends of the lugsr 6.1, and the work has a socket offset from the key 68 for reception of a pin 69 that extends partly into the work and partly into the work holder, to balance the strainv on the Work and Work holder.

I desire it understood that I do not limit myself to. any particular form of work holder as its form will be dictated by the shape and character of the article to 'be marked and as intimated in tensive oscillating movement will be imparted to the marking die. This is because, in the illustrated embodiment, the power is applied to the shaft that carries thework holder. However, it is obvious that since the die holder and work holdershafts are directly geared by similar gears, the power could just as well be applied to the gear on the die holder shaft, because in any event the movement of both shafts will be simultaneous and co-extensive.

In vpreparing the machine for operation the desired number of dies 5.0, with appropriate indicia thereon, will be placed in the recess 41 in the die mounting element 43 with their thin ends 49 on the arcuate portion 48. Should the indicia sought to be impressed upon the work require all the dies that the recess will hold there will be no necessity of using blank spacers or fillers. When the proper number of dies are in place, the mounting element is clamped between the clam-p elements, and the assembly is secured together by bolts and dowel pins, the rib 5I of the element 4I: fitting into the notches 52 in the dies, and the type of the die will protrude beyond the periphery of the assembled elements in position to operate upon the work. The element of adjustment of the housing 35, will be Very slight, not more than the depth to which the type or indicia will be impressed into the work.

I claim:

In a machine for marking indicia upon surfaces of cylindrical components, in combination, a support comprising front and rear spaced supporting plates, a shaft rotatably mounted in said plates and provided beyond the front plate with awork holder and having a gear thereon, a two section shaft one of which sections is mounted in a bearing in said plate, a housing vertically adjustable on the front plate, the other part of said shaft having a bearing in said housing and having a die holder on its outer end, connections between the two shaft sections in said housing permitting the adjustment of the outer shaft section with respect to the inner one to vary the distances between the work holder and the die holder upon the adjustment of the housing, a gear on the inner shaft section and meshed with the gear on the work holder shaft, and means for oscillating the gear on said work holder shaft and. thereby oscillating the two section shaft.

' ROBERT H. NOBLE.V

CERTFICATE 0]:7l CORRECTION.

Patent No. 2,558,822. september 25, 191m.

ROBERT H. NOBLE.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page l, seoond column, line 7 for the word ugearing read --bearing; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and lsealed this lllth day of November, A. D. 191m.

Leslie Frazer (Seal) Acting Commissioner of Patents. 

